remove unused ImplSwapOutAsLink

Change-Id: Idb0796bfb3da1695bcd7fafcd9608dc336c30196
Reviewed-on: https://gerrit.libreoffice.org/52394Tested-by: Jenkins <ci@libreoffice.org>
Reviewed-by: Tomaž Vajngerl <quikee@gmail.com>

vcl/inc/impgraph.hxx

@@ -176,7 +176,6 @@ private:
     bool                ImplSwapIn( SvStream* pIStm );
 
     bool                ImplSwapOut();
-    void                ImplSwapOutAsLink();
     bool                ImplSwapOut( SvStream* pOStm );
 
     bool                ImplIsSwapOut() const { return mbSwapOut;}

vcl/source/gdi/impgraph.cxx

@@ -1305,13 +1305,6 @@ bool ImpGraphic::ImplSwapOut()
     return bRet;
 }
 
-void ImpGraphic::ImplSwapOutAsLink()
-{
-    ImplCreateSwapInfo();
-    ImplClearGraphics();
-    mbSwapOut = true;
-}
-
 bool ImpGraphic::ImplSwapOut( SvStream* xOStm )
 {
     bool bRet = false;